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Homework Help: A somewhat related subject

  1. Aug 31, 2005 #1
    Hi I am currently studying physics (mostly mechanics)... however I find that books and teachers unsatisfying on the matter of proofs. I looked for books that give theoretical evidences but I failed to find any... does anyone have recommendations?
  2. jcsd
  3. Aug 31, 2005 #2


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    What exactly do you want a proof of? Generally, I found Symon's mechanics to be quite satisfying proof-wise.
  4. Aug 31, 2005 #3
    Not something exaclty, but on several things. I am looking for a book that prooves the equations that are given.
  5. Aug 31, 2005 #4


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    This depends greatly on what level you're looking at...
    Algebra? Vector trig? Calculus? Diff.Eq?

    IMHO, any instance where a theory is actually used
    to describe a physical (real) situation (as an example)
    that example is a "model" of reality.
    You can't "prove" a model - you just try it,
    then compare with the experiment.
    If the model prediction is pretty close to the experiment,
    you use that model again - if not, you toss it out.

    If you're just starting, maybe most of the "equations"
    are essentially definitions.
    (Physics books tend to NOT distinguish equations with 3 lines).
    Again, you can't prove a definition -
    you keep useful ones and discard the non-useful ones.
  6. Aug 31, 2005 #5
    I could not say I am far into it, but I studied good part of mechanics, optics and accoustics. I understand that physics is built around models, but some equation are derived from the models, what I am looking for is how such equations are obtained.
    Last edited: Aug 31, 2005
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